1
Abstract
The operational description of
climate has
been traditionally
based on past observations, using
a 30-year normal period such as 1961-1990. In a world with ongoing
anthropogenic climate
change, however, past data give a potentially
biased estimate of the
actual present-day and
near-future
climate. Here we
attempt to correct this
bias with a “delta
change” method, in
which
/media/ces/CES_D2.4_task1.pdf